22121120020121 has 4 divisors (see below), whose sum is σ = 22182738739200. Its totient is φ = 22059501301044.

The previous prime is 22121120020081. The next prime is 22121120020123. The reversal of 22121120020121 is 12102002112122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22121120020121 - 2²⁶ = 22121052911257 is a prime.

It is a super-2 number, since 2×22121120020121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22121120020121.

It is not an unprimeable number, because it can be changed into a prime (22121120020123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30809359001 + ... + 30809359718.

It is an arithmetic number, because the mean of its divisors is an integer number (5545684684800).

Almost surely, 2^{22121120020121} is an apocalyptic number.

It is an amenable number.

22121120020121 is a deficient number, since it is larger than the sum of its proper divisors (61618719079).

22121120020121 is an equidigital number, since it uses as much as digits as its factorization.

22121120020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61618719078.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22121120020121 its reverse (12102002112122), we get a palindrome (34223122132243).

The spelling of 22121120020121 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred twenty million, twenty thousand, one hundred twenty-one".